Unparticle effects on top quark rare decays

Download

10.1016:j.physletb.2008.10.037.pdf

Date

2009-01-05

Author

Alıyev, Tahmasıb
OZANSOY, KORKUT OKAN

Metadata

Show full item record

This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Item Usage Stats

163
views

145
downloads

In this work we study the flavor changing neutral current (FCNC) decays of the top quark, t -> c gamma and t -> cg, in the framework of the unparticle physics. The Standard Model predictions for the branching ratios of these decays are about similar to 5 x 10(-14), and similar to 1 x 10(-12), respectively. The parameter space of lambda, Lambda, and d is obtained by taking into account the SM predictions and the results of the simulation performed by the ATLAS Collaboration for the branching ratios of t -> c gamma and t -> cg decays.

Subject Keywords

Nuclear and High Energy Physics, Models beyond the standard model, Other particles (including hypothetical)

URI

https://hdl.handle.net/11511/36227

Journal

PHYSICS LETTERS B

DOI

https://doi.org/10.1016/j.physletb.2008.10.037

Collections

Department of Physics, Article

Suggestions

OpenMETU
Core

The mu -> e gamma and tau ->mu gamma decays in the general two Higgs doublet model with the inclusion of one universal extra dimension Iltan, EO (2004-02-01) We study the effect of one universal extra dimension on the branching ratios of the lepton flavor violating processes mu --> egamma and tau --> mugamma in the general two Higgs doublet model. We observe that these new effects are tiny for the small values of the compactification radius R. Furthermore, we see that these effects are comparable with the branching ratio obtained without including extra dimension, if the neutral Higgs bosons are nearly degenerate and the complexity of the Yukawa coupling, induci...
The effects of non-universal extra dimensions on the radiative lepton flavor decays mu -> e gamma and tau ->mu gamma in the two Higgs doublet model Iltan, EO (2004-08-01) We study the effect of non-universal extra dimensions on the branching ratios of the lepton flavor violating processes mu --> egamma and tau --> mugamma in the general two Higgs doublet model. We observe that these effects are small for a single extra dimension, however, in the case of two extra dimensions there is a considerable enhancement in the additional contributions.
Unparticle effects in rare t -> cgg decay Alıyev, Tahmasıb; Savcı, Mustafa (American Physical Society (APS), 2008-09-01) In this work the flavor-changing, rare t -> cgg decay induced by mediation of scalar and tensor unparticles is studied. Using the standard model result for the branching ratio of the t -> cgg decay, the parameter space of d(U) and Lambda(U), where the branching ratio of this decay exceeds the one predicted by the standard model, is obtained. Measurement of the branching ratio larger than 10(-9) can give valuable information for establishing unparticle physics.
b -> s gamma decay in the two Higgs doublet model with flavour changing neutral currents Alıyev, Tahmasıb (IOP Publishing, 1999-05-01) We study the b --> s gamma decay including the next-to-leading QCD corrections in the two Higgs doublet model with flavour changing neutral currents at the tree level. We find the constraints to the flavour changing parameters of the model, using the experimental results on the branching ratio of B --> X(s)gamma decay, provided by the CLEO Collaboration. The restrictions coming from the Delta F = 2 (F = K, D, B) mixing and the rho parameter.
The exclusive B ->pi l(+)l(-) and B ->rho l(+)l(-) decays in the general two Higgs doublet model Erkol, G; Turan, Gürsevil (2002-02-01) We study the differential branching ratio, branching ratio and the forward-backward asymmetry for the exclusive B --> pil(+)l(-) and B --> rhol(+)l(-) decays in the general two Higgs doublet model including the neutral Higgs boson erects. We analyze the dependencies of these quantities on the neutral Higgs boson contributions and the other model parameters. We observe that two Higgs doublet model with the neutral Higgs boson exchanges gives quite sizable contributions to these observables for both channels ...

Citation Formats

T. Alıyev and K. O. OZANSOY, “Unparticle effects on top quark rare decays,” PHYSICS LETTERS B, pp. 336–339, 2009, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/36227.